The action on these is fast, they hit hard, and the lock-up is excellent.

Titanium and Carbon Fiber sides to Handle & Titanium Charging Bar.

To retract the blade it has a charging bar at the base of the handle and while pressing the button and then pulling back on the charging bar the knife is reset to the closed position.

Comes With A Molded Black Kydex Knife Sheath with Belt Attachment System & Is MOLLE-Compatible.

This model can be used as:

A rapid deployment tool to cut away from rigging and lines when a parachute deployment failure occurs.

A tool used to cut away from missed parachute landings while suspended or tangled.

A survival tool used to cut numerous things.

A tactical defensive tool used for last resort hand to hand combat.

Specifications:

Overall Length:9.5"

Blade Length:4.0"

Blade Thickness:0.17"

Blade Material: VG-10 Stainless Steel

Blade Style:Drop Point

Blade Grind:Flat

Blade Finish: Polished and Brushed Combination

Edge Type: Plain Edge

Handle Length: 5.48"

Handle Thickness:0.48"

Handle Material:Titanium and Carbon Fiber

Handle Color:Brushed Titanium and Black Carbon Fiber

Weight:4.6 oz.

Sheath:Molded Plastic

Knife Type:Single Action OTF Automatic

Opener:Push Button

Brand: Angel Blade

Model: High Altitude High Opening Mini-Ranger

There are two techniques used in MFF (Military Free Fall): HALO (high altitude - low opening) & HAHO (high altitude - high opening) which both are at a high altitude and involve free-fall parachute insertion.

In the HAHO technique, the parachutist opens his parachute at a high altitude just a few seconds after jumping from the aircraft, while in the HALO technique, the parachutist opens his parachute at a low altitude after free-falling for a period of time.

HAHO is generally used only for personnel while the HALO is used for delivering equipment, supplies, or personnel. The HALO technique has lately been practiced by civilians as a form of skydiving.

HALO techniques date back to 1960 when the U.S. Air Force was conducting experiments that followed earlier work by Colonel John Stapp in the late 1940s through early 1950s on survivability factors for high-flying pilots needing to eject at high altitudes.

The HAHO technique is used to airdrop personnel at high altitudes when aircraft are unable to fly above enemy skies without posing a threat to the jumpers. In addition, HAHO parachute jumps are employed in the covert insertion of military personnel (generally special operations forces) into enemy territory, in circumstances where the covert nature of an operation may be compromised by the loud noise of parachutes opening at low altitude.

HAHO jumps also allow a longer travel distance due to increased under canopy time, allowing travelling distances of more than 40 miles (64 km).

In a typical HAHO exercise, the jumper will jump from the aircraft and deploy the parachute at a high altitude, 10–15 seconds after the jump (typically at 27,000 feet (8,200 m) or so). The jumper will use a compass or GPS device for guidance while flying for 30 or more miles (48+ kilometres). The jumper must use way points and terrain features to navigate to their desired landing zone, and correct their course to account for changes in wind speed and direction. If deploying as a team, the team will form up in a stack while airborne with their parachutes. Usually, the jumper in the lowest position will set the travel course and act as a guide for the other team members.

Whilst in the British Special Forces (22 SAS), due to his extensive skydiving background, Charles "Nish" Bruce was pivotal in the original trials & development of the HAHO tactic now routinely used as a conflict insert for Special Forces.

All types of parachuting techniques are dangerous, but HALO/HAHO carry special risks. At high altitudes (greater than 22,000 feet [6,700 m]), the partial pressure of oxygen in the Earth's atmosphere is low. Oxygen is required for human respiration and lack of pressure can lead to hypoxia. Also, rapid ascent in the jump aircraft without all nitrogen flushed from the bloodstream can lead to decompression sickness (also known as caisson disease or "the bends").

Danger can come from medical conditions affecting the jumper. For example, cigarette smoking, alcohol and drug use (including histamine antagonists, sedatives, and analgesics), anemia, carbon monoxide, fatigue and anxiety can all lead to a jumper being more susceptible to hypoxia. Theoretically, a single breath of atmospheric air may elevate the jumper's arterial nitrogen level to dangerous levels. A jumper suffering from hypoxia may lose consciousness and therefore be unable to open his parachute. A jumper suffering from decompression sickness may die or become permanently disabled from nitrogen bubbles in the bloodstream, which causes inflammation of joints.

Another risk is from the low ambient temperatures prevalent at higher altitudes. At an altitude of 35,000 feet, the jumper faces temperatures of –45 °C (–50 °F), and can experience frostbite. However, jumpers generally wear polypropylene knit undergarments and other warm clothing to prevent this.

In a typical HAHO exercise, a parachutist will jump with:

an altimeter

an automatic [parachute] activation device (AAD)

a parachute

a knife

a helmet

a pair of gloves

a pair of military free-fall boots

bailout oxygen

a 50–100+ pound combat pack with fighting and sustenance gear

The MOLLE system was introduced in 1997. However, it did not see widespread issue until after the September 11, 2001, attacks and was used by U.S. troops serving in Afghanistan and, later, Iraq. Early criticisms of the MOLLE system emerged, particularly from the Army. Many of these criticisms have centered on the sustainment-load pack and frame, due to the external plastic frame being too fragile and subject to breaking in the field (since mitigated), that the zippers have a tendency to burst when stuffed full, and that the pack's straps lack sufficient length to be used with bulky body armor. Further, the first generation of this system utilized a "ball & socket" interface between the frame and rucksack belt (which in itself formed the waistbelt of the MOLLE vest). This interface method led to numerous lower back injuries due to the ball (mounted on the frame) missing the socket interface on the waistbelt and impacting the user's body. Subsequent redesign of the SDS MOLLE led to the deletion of this "feature", and thus the vest (FLC) and ruck/frame were separate non-integral items.

The United States Marine Corps wanted a larger load-bearing capability, a smaller overall volume, the ability to carry 60 mm and 81 mm mortar rounds external to the pack, and a simpler overall layout and organization of the system's parts. In 2004, the Marine Corps adopted a new off-the-shelf pack design by Arc'teryx and introduced it into the Fleet as the ILBE, or "Improved Load Bearing Equipment". The ILBE is now being replaced with the USMC Pack.

A further adaptation by a private company has developed MOLLEminus systems. MOLLEminus systems are made from a proprietary fabric, claiming to be a superior alternative to current-issue Cordura nylon. Rather than conventionally sewing on the MOLLE webbing, MOLLEminus has the MOLLE cut into the material itself, forming a grid of slots. This theoretically eliminates any stress points that could weaken the integrity of the material.

The Original RANGER design was first made by Robbie Dalton in 1994, this model was made for three years from 1994 through 1996. The first release was a drop point blade design that was solid. Next the Para-Rescue model, then the Skeleton blade design with cutouts for lighter weight, then the Ranger II, and last the Ranger Tanto. Meanwhile at the same time Microtech released a smaller version called the HALO in 1995 and this was produced for several years with the HALO I, HALO II and HALO III. Then they never made the 4th version and skipped to the HALO V which resulted to coming back to the original size of Dalton Combat Knives' original size design. This design has been a controversial one from the beginning with arguments of which company made theirs first and a rival between them. I would have to say that Dalton Combat gets the credit for the original design concept but Microtech gets the credit for the polarization of the design. This is why Angel Blade Knives has decided to name this knife correctly as the H.A.H.O Ranger.

US AGENCIES USING THE HALO AND HALO TECHNIQUES:

Paramilitary Agencies

Special Activities Division (CIA)

Hostage Rescue Team (FBI)

Air Force

USASOC Military Free Fall Parachute Badge

U.S. Air Force Pararescue

U.S. Air Force Combat Control Team

U.S. Air Force Tactical Air Control Party

U.S. Air Force Special Operations Weather Technician

U.S. Air Force S.E.R.E. Specialists

U.S. Air Force Physiological Technicians (PTs)

Army

Parachute Riggers

Long Range Surveillance Companies

U.S. Army 75th Ranger Regiment

Regimental Reconnaissance Company

U.S. Army Special Forces

U.S. Army 1st Special Forces Operational Detachment-Delta (also known as Delta Force)

U.S. Army Intelligence Support Activity (USAIS) (also known as Intelligence Support Activity)